Stream Gradients and Base Level A segment of the Missouri River flows across the

Question

Stream Gradients and Base Level A segment of the Missouri River flows across the Portage map in figure 4.7 7. Beginning about 1 mile downstream from Rainbow Dam, a series of contour lines cross the Missouri River. In a distance of 1.7 river miles, the river drops 60 feet. On the basis of this information, what is the gradient of the river along this stretch? State your answer in feet per mile. 1. What is the direction of flow of the Missouri River? 2. Three dams are located along the course of the Missouri River. On the basis of human-made instal- lations associated with each dam (See Appendix B), what purposes do the dams serve? 8. The Missouri River flows a total distance of 2,500 miles from its headwaters at 14,000 feet above sea level to its confluence with the Mississippi River at 410 feet above sea level. (a) What is the average gradient of the Missouri 3. How many new base levels have been created by these dams? 4. In the stretch of the Missouri River between the Rainbow Dam and the Ryan Dam, is the water depth greater near the Rainbow Dam or the Ryan Dam? River from source to mouth? State your answer in feet per mile. 5. In the same stretch of river, state whether the riverbed is subject to erosion or deposition at the following sites: (a) Immediately downstream from the Rainbow (b) What is the average gradient of the Missouri River from source to mouth? State your anwer in meters per kilometer Dam. (b) Immediately upstream from the Ryan Dam. 6. If the Ryan Dam were destroyed by an earthquake, describe the environmental effects on (a) The channel of the Missouri River between Ryan (c) Why does the average gradient differ from the gradient determined in question 7 Dam and Rainbow Dam. (b) Morony Dam. 112 PART IV

Explanation / Answer

1-

This river flows from the southwestern to northeastern in the given map because river always flow from higher contour levels to lower contour levels

2-

The dams build in it is basically for cultivating electricity or electricity generation

Ryan dam - concrete arch type- 61feet height, 60MW capacity

Rainbow dam - concrete arch type- 28 feet- 36MW capacity

Morony reservoir- 59 feet height- 48 MW capacity

3-

There are 3 new base levels are created and each for each dams (Ryan dam, Morony Dam, Rainbow dam). New base level is any level which is above than the ultimate or sea level of river so any dam which has certain height makes new base level

4-

Rainbow dam is located at the higher elevation and its depth is low around 28feet and the Ryan river is located in the lower elevation and its depth of dam is around 61 feet so we can say that water depth is greater at Ryan dam than the Rainbow dam

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---